Watt-hour meter



I March -3, 1942. A. HUNGERBUHLEE WATT-HOUR METER Filed July 21, 1939 was/fly: Tl/IPIIAMI:

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Patented Mar. 3, 1942 UNITED STATES PATENT OFFICE 2,275,015 WATT-HOUR METER August Hungerbiihler, Zug, Switzerland, assignor to Landis & Gyr, A G corporation of Switzerla Zug, Switzerland, a. nd

Application July 21, 1939, Serial No. 285,659

In Switzerland July 1 Claim.

The present invention relates to induction watthour meters and more particularly to a novel and improved temperature compensated watthour meter.

Objects and set forth in part The invention relates to an t alloy for the compensation of the temperature error. According to the invention a driving system contains at part formed of the alloy. The alloy can furtherore be also arranged in a shunt path of the current core.

It will be understood that the foregoing general following detailed description able manner to The alloy can obviously replace some of the plates of the laminated shunt limb.

In order to compensate of the meter to a large extent, the potential drivthe two moving fluxes is prevented.

The invention in its broader aspects is not limand without sacrificing its chief advantages.

What I claim is: A temperature compensated induction meter including a current core, a voltage core having a AUGUST HUN GERBfiI-ILER. 

